Simple Harmonic Motion Questions and Answers

An oscillating system has a frequency of 20 Hz. What is its time period 
A mass of 2Kg is oscillating on a spring. The frequency of oscillation is 3Hz, and the amplitude is 2cm. What is the maximum acceleration of the mass? 
A long pendulum has a time period of 10s. If the bob is displaced 2m from the equilibrium position and released, how long will it take to move 1m